Butterfly valve with high water flow impact resistance

Abstract

The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with high water flow impact resistance, which comprises a valve body, a valve rod and a valve plate, flange plates are fixedly connected to two sides of the valve body respectively, the top of the valve plate is fixedly connected with the bottom end of the valve rod, and a cleaning structure is arranged on the outer wall of the valve body and comprises a shell. The shell is arranged on the outer wall of the valve body in a communicating mode, a rotating rod is rotationally connected to the inner wall of the shell, and a rotary knob is fixedly connected to one end of the rotating rod. The brush rotates on the buffer plate and cleans impurities attached to the surface of the filter screen, non-circulation of liquid caused by accumulation of excessive impurities on the surface of the filter screen is avoided, when the valve plate is opened, circulation of the liquid in the valve body is achieved, water flow sequentially passes through the filter screen and the buffer plate, and the filter screen is used for filtering the impurities in the water flow. And the buffer plate can prevent water flow from directly impacting the valve plate to shorten the service life of the valve plate.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with strong water flow impact resistance. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for on-off control of low-pressure pipeline media. A butterfly valve refers to a valve whose closing member (valve disc or butterfly plate) is a disc that rotates around the valve axis to achieve opening and closing.

[0003] After searching, Chinese patent publication number CN212643564U discloses a two-way high-performance soft-sealed butterfly valve, including a valve body connecting pipe fitting, the outer sleeve of the valve body connecting pipe fitting is provided with a butterfly valve support sleeve, and a gearbox is provided above the valve body connecting pipe fitting, and a rotating handwheel is fixedly connected to the top of the gearbox by a rotating shaft, a valve core is provided inside the valve body connecting pipe fitting, and the valve core and the gearbox are fixedly connected by a connecting rod, and a limiting protrusion is provided on the inner wall of the valve body connecting pipe fitting at a position corresponding to the valve core. The valve core inside the two-way high-performance soft-sealed butterfly valve is equipped with a valve core reinforcement rib, which cooperates with the limiting protrusion to achieve a double-layer sealing effect of the valve core and the limiting groove, completely solving the problem that the soft seal in the metal sheet interlayer is deformed after being eroded for a long time, which directly affects the sealing performance, effectively extending the service life, and after the valve core is closed, the valve core reinforcement rib is directly embedded in the limiting groove, which has a stronger ability to resist water flow impact, better sealing effect, and strong practicality.

[0004] Due to the flow of liquid and other media, butterfly valves cannot filter impurities in the liquid, resulting in the inability to clean the filter screen, which can easily clog the valve plate, causing the valve plate to not be completely sealed. At the same time, due to long-term corrosion by the medium, the service life of the valve plate will be affected. In view of this, we propose a butterfly valve with strong resistance to water flow impact. Utility Model Content

[0005] In response to the shortcomings of the existing technology, the present invention provides a butterfly valve with strong resistance to water flow impact, which solves the problem of being unable to filter impurities in the liquid. To achieve the above purpose, the present invention is implemented through the following technical solutions: a butterfly valve with strong resistance to water flow impact, comprising a valve body, a valve stem, and a valve plate, wherein flanges are fixedly connected to both sides of the valve body, the top of the valve plate is fixedly connected to the bottom end of the valve stem, the outer wall of the valve body is provided with a cleaning structure, the cleaning structure comprises a shell, the shell is connected to the outer wall of the valve body, the inner wall of the shell is rotatably connected to a rotating rod, one end of the rotating rod is fixedly connected to a knob, the other end of the rotating rod is connected to a telescopic component, the telescopic component is connected to a brush, a buffer plate is fixedly connected to the valve plate, and a filter screen is fixedly connected to the buffer plate.

[0006] Preferably, a self-locking structure is provided on the valve plate, and the self-locking structure includes a worm gear, and the worm gear is fixedly sleeved on the surface of the worm, and the top of the valve body is fixedly connected to a mounting plate, and the inner side of the mounting plate is rotatably connected to the worm through a bearing, and the other end of the worm is movable through the mounting plate and fixedly connected to a handwheel.

[0007] Preferably, the telescopic assembly includes a limiting shell, which is fixedly connected to one end of the rotating rod, the inner wall of the limiting shell contacts and is movably connected to the telescopic rod, the brush is fixedly connected to the other end of the movable rod, the inner wall of the limiting shell is fixedly connected to a spring, and the other end of the spring is fixedly connected to one end of the movable rod.

[0008] Preferably, there are two buffer plates and two filter screens respectively, and the two buffer plates and filter screens are symmetrically arranged on the two side edges of the valve plate. When the valve plate is opened, the liquid inside the valve body is circulated, and the water flows through the filter screen and the buffer plate in turn. The filter screen is used to filter impurities in the water flow. The buffer plate can prevent the water flow from directly impacting the valve plate, thereby reducing the service life of the valve plate.

[0009] Preferably, the brush is arc-shaped and extends from the inside of the outer shell to the inside of the valve body. The brush is respectively arranged in cooperation with two filter screens. When the valve plate is closed to block the internal circulation of the valve body, the impurities attached to the surface of the filter screen are cleaned on the buffer plate by the arranged brush to avoid excessive accumulation of impurities on the surface of the filter screen causing liquid to not circulate.

[0010] Preferably, the buffer plate and the filter are both arc-shaped, and a number of through holes are opened on the two buffer plates. The buffer plate, valve plate and filter are regarded as a sphere as a whole. After rotating ninety degrees, the filter is close to the brush for easy cleaning.

[0011] Preferably, a sealing ring is detachably connected to the valve plate, and the valve plate is in sealing contact with the inner wall of the valve body through the sealing ring. The sealing performance of the valve plate in the valve body can be improved by the provision of the sealing ring.

[0012] As can be seen from the above technical solutions, the butterfly valve with strong resistance to water flow impact provided by the embodiments of this specification has at least the following beneficial effects:

[0013] (1) The utility model uses a brush that rotates on the buffer plate and cleans impurities attached to the surface of the filter screen, avoiding excessive accumulation of impurities on the surface of the filter screen causing liquid to stagnate. When the valve plate is opened, the liquid inside the valve body is circulated, and the water flows through the filter screen and the buffer plate in turn. The filter screen is used to filter impurities in the water flow. The buffer plate can prevent the water flow from directly impacting the valve plate, causing the service life of the valve plate to be reduced.

[0014] (2) In the present invention, the worm drives the worm wheel to rotate by meshing with the worm wheel. Since the worm and the worm wheel are meshing, the worm drives the worm wheel to rotate, and the worm wheel drives the valve stem to rotate. Since the worm and the worm wheel have a self-locking function, the speed is reduced and the torque is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the cleaning structure and the self-locking structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the filter screen and the buffer plate in the utility model;

[0019] Figure 4 It is a cross-sectional view of the telescopic component in the present utility model.

[0020] In the figure: 1. Valve body; 2. Flange; 3. Mounting plate; 4. Valve plate; 5. Cleaning structure; 501. Housing; 502. Turning rod; 503. Knob; 504. Telescopic assembly; 5041. Movable rod; 5042. Limiting shell; 5043. Spring; 505. Brush; 506. Filter; 507. Buffer plate; 7. Self-locking structure; 701. Handwheel; 702. Worm; 703. Worm gear; 8. Valve stem. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0022] See also Figure 1-Figure 3As shown, a butterfly valve with strong resistance to water flow impact includes a valve body 1, a valve stem 8, and a valve plate 4. Flanges 2 are fixedly connected to both sides of the valve body 1. A sealing ring is detachably connected to the valve plate 4. The valve plate 4 is in sealing contact with the inner wall of the valve body 1 through the sealing ring. The sealing ring can improve the sealing performance of the valve plate 4 in the valve body 1. The top of the valve plate 4 is fixedly connected to the bottom end of the valve stem 8. A cleaning structure 5 is provided on the outer wall of the valve body 1. The cleaning structure 5 includes a shell 501. The shell 501 is communicated with the outer wall of the valve body 1. The inner wall of the shell 501 is rotatably connected to a rotating rod 502. The rotating rod 502 One end is fixedly connected with a knob 503, and the other end of the rotating rod 502 is connected with a telescopic component 504, and the telescopic component 504 is connected with a brush 505. A buffer plate 507 is fixedly connected to the valve plate 4, and a filter screen 506 is fixedly connected to the buffer plate 507. There are two buffer plates 507 and two filter screens 506. The two buffer plates 507 and the filter screen 506 are symmetrically arranged on the two side edges of the valve plate 4. When the valve plate 4 is opened, the liquid inside the valve body 1 is circulated, and the water flows through the filter screen 506 and the buffer plate 507 in turn, and the filter screen 506 is used to remove impurities in the water flow. The buffer plate 507 is provided to prevent the water flow from directly impacting the valve plate 4 and reducing the service life of the valve plate 4. The brush 505 is arc-shaped and extends from the inside of the shell 501 to the inside of the valve body 1. The brush 505 is respectively provided with two filter screens 506. When the valve plate 4 is closed to block the internal circulation of the valve body 1, the brush 505 is provided to clean the impurities attached to the surface of the filter screen 506 on the buffer plate 507 to avoid excessive accumulation of impurities on the surface of the filter screen 506 and causing the liquid to not circulate. The buffer plate 507 and the filter screen 506 are both arc-shaped. There are several through holes on 507. The buffer plate, valve plate 4 and filter screen 506 are regarded as a sphere as a whole. After rotating ninety degrees, the filter screen 506 is close to the brush 505 for easy cleaning. The telescopic component 504 includes a limiting shell 5042, which is fixedly connected to one end of the rotating rod 502. The inner wall of the limiting shell 5042 is in contact with and movably connected to the telescopic rod. The brush 505 is fixedly connected to the other end of the movable rod 5041. The inner wall of the limiting shell 5042 is fixedly connected to the spring 5043, and the other end of the spring 5043 is fixedly connected to one end of the movable rod 5041.

[0023] Furthermore, the brush 505 is arranged to rotate on the buffer plate 507 and clean the impurities attached to the surface of the filter 506, so as to avoid excessive accumulation of impurities on the surface of the filter 506 and the blockage of liquid circulation. When the valve plate 4 is opened, the liquid inside the valve body 1 is circulated, and the water flows through the filter 506 and the buffer plate 507 in turn, and the filter 506 is used to filter the impurities in the water flow. The buffer plate 507 can prevent the water flow from directly impacting the valve plate 4, thereby reducing the service life of the valve plate 4. Example 2

[0024] See also Figure 3-Figure 4 As shown, a self-locking structure 7 is provided on the valve plate 4, and the self-locking structure 7 includes a worm gear 703, which is fixedly sleeved on the surface of the worm 702. The top of the valve body 1 is fixedly connected to the mounting plate 3, and the inner side of the mounting plate 3 is rotatably connected to the worm 702 through a bearing. The other end of the worm 702 is movable through the mounting plate 3 and is fixedly connected to the handwheel 701. When the valve plate 4 is closed to block the internal circulation of the valve body 1, the brush 505 is provided to clean impurities attached to the surface of the filter screen 506 on the buffer plate 507 to avoid excessive accumulation of impurities on the surface of the filter screen 506 causing liquid to not circulate.

[0025] Furthermore, through the engagement of the worm 702 and the worm wheel 703, the worm 702 drives the worm wheel 703 to rotate. Since the worm 702 and the worm wheel 703 are engaged, the worm 702 drives the worm wheel 703 to rotate, and the worm wheel 703 drives the valve stem 8 to rotate. Since the worm 702 and the worm wheel 703 have a self-locking function, the speed is reduced and the torque is increased.

[0026] When a butterfly valve with strong resistance to water flow impact of the present invention is used, the buffer plate 507, the valve plate 4 and the filter screen are regarded as a sphere as a whole through the provided buffer plate 507. The hand wheel 701 is turned to make the hand wheel 701 drive the worm 702 to rotate. Through the meshing of the worm 702 and the worm gear 703, the worm 702 drives the worm gear 703 to rotate. Since the worm 702 and the worm gear 703 are meshed, the worm 702 drives the worm gear 703 to rotate, and the worm gear 703 drives the valve stem 8 to rotate. Since the worm 702 and the worm gear 703 have a self-locking function, the speed is reduced and the torque is increased. After the valve stem 8 rotates ninety degrees, the valve plate 4 rotates with the valve stem 8, and the valve plate is closed to block the internal circulation of the valve body 1. At this time, the filter screen 506 squeezes the brush. 505, so that the movable rod 5041 squeezes the spring 5043 on the inner wall of the limit shell 5042 until the brush 505 is pressed against the surface of the filter screen 506. At this time, turn the knob 503 to make the knob 503 drive the brush 505 to rotate. The provided brush 505 rotates on the buffer plate 507 and cleans the impurities attached to the surface of the filter screen 506, avoiding excessive accumulation of impurities on the surface of the filter screen 506 and causing liquid to stagnate; when the valve plate 4 is opened, the liquid inside the valve body 1 is circulated, and the water flows through the filter screen 506 and the buffer plate 507 in turn, and the filter screen 506 is used to filter the impurities in the water flow. The provided buffer plate 507 can prevent the water flow from directly impacting the valve plate 4 and causing the service life of the valve plate 4 to be reduced.

[0027] The above implementation methods are only used to illustrate the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. Ordinary technicians in the relevant technical field can make various changes and modifications without departing from the spirit and scope of the embodiments of the present invention. Therefore, all equivalent technical solutions also fall within the scope of the embodiments of the present invention, and the scope of patent protection of the embodiments of the present invention should be defined by the claims.

Claims

1. A butterfly valve with strong resistance to water flow impact, comprising a valve body (1), a valve stem (8), and a valve plate (4), characterized in that: The valve body (1) is fixedly connected to flanges (2) on both sides, the top of the valve plate (4) is fixedly connected to the bottom end of the valve stem (8), the outer wall of the valve body (1) is provided with a cleaning structure (5), the cleaning structure (5) includes a shell (501), the shell (501) is connected to the outer wall of the valve body (1), the inner wall of the shell (501) is rotatably connected to a rotating rod (502), one end of the rotating rod (502) is fixedly connected to a knob (503), the other end of the rotating rod (502) is connected to a telescopic component (504), the telescopic component (504) is connected to a brush (505), the valve plate (4) is fixedly connected to a buffer plate (507), and the buffer plate (507) is fixedly connected to a filter screen (506).

2. A butterfly valve with strong resistance to water flow impact according to claim 1, characterized in that: The valve plate (4) is provided with a self-locking structure (7), and the self-locking structure (7) includes a worm gear (703), and the worm gear (703) is fixedly sleeved on the surface of the worm (702). The top of the valve body (1) is fixedly connected to a mounting plate (3), and the inner side of the mounting plate (3) is rotatably connected to the worm (702) through a bearing. The other end of the worm (702) movably passes through the mounting plate (3) and is fixedly connected to a handwheel (701).

3. The butterfly valve with strong water flow impact resistance according to claim 1, characterized in that: The telescopic assembly (504) comprises a limiting shell (5042), the limiting shell (5042) being fixedly connected to one end of the rotating rod (502), the inner wall of the limiting shell (5042) being in contact with and movably connected to the telescopic rod, the brush (505) being fixedly connected to the other end of the movable rod (5041), the inner wall of the limiting shell (5042) being fixedly connected to a spring (5043), the other end of the spring (5043) being fixedly connected to one end of the movable rod (5041).

4. The butterfly valve with strong water flow impact resistance according to claim 1, characterized in that: The number of the buffer plates (507) and the filter screen (506) is two respectively, and the two buffer plates (507) and the filter screen (506) are symmetrically arranged on the two side edges of the valve plate (4).

5. The butterfly valve with strong resistance to water flow impact according to claim 1, characterized in that: The brush (505) is arc-shaped and extends from the interior of the housing (501) to the interior of the valve body (1). The brush (505) is respectively arranged in cooperation with two filter screens (506).

6. The butterfly valve with strong resistance to water flow impact according to claim 1, characterized in that: The buffer plate (507) and the filter screen (506) are both arc-shaped, and a plurality of through holes are provided on both buffer plates (507).

7. The butterfly valve with strong water flow impact resistance according to claim 1, characterized in that: A sealing ring is detachably connected to the valve plate (4), and the valve plate (4) is in sealing contact with the inner wall of the valve body (1) via the sealing ring.

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